The current leading paradigm for temporal information extraction from text
consists of three phases: (1) recognition of events and temporal expressions,
(2) recognition of temporal relations among them, and (3) time-line
construction from the temporal relations. In contrast to the first two phases,
the last phase, time-line construction, received little attention and is the
focus of this work. In this paper, we propose a new method to construct a
linear time-line from a set of (extracted) temporal relations. But more
importantly, we propose a novel paradigm in which we directly predict start and
end-points for events from the text, constituting a time-line without going
through the intermediate step of prediction of temporal relations as in earlier
work. Within this paradigm, we propose two models that predict in linear
complexity, and a new training loss using TimeML-style annotations, yielding
promising results.

本研究提出了一种新的时间信息提取模式，通过直接从文本预测事件的起止点来构建时间线，该模式实现了线性复杂度，利用 TimeML 风格的注释训练新的模型，结果表现出很好的效果。